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This video from the US Surgeon General advises parents to "Know the Risks," and highlights how e-cigarettes have the potential to cause lasting harm to the health of young users, especially their brain development, which continues until about age 25. [72] E-cigarettes use by children and adolescents may result in nicotine addiction. [73]:
This is confirmed in the daily mood patterns described by smokers, with normal moods during smoking and worsening moods between cigarettes. Thus, the apparent relaxant effect of smoking only reflects the reversal of the tension and irritability that develop during nicotine depletion. Dependent smokers need nicotine to remain feeling normal." [131]
Nicotine withdrawal is a group of symptoms that occur in the first few weeks after stopping or decreasing use of nicotine.Symptoms include intense cravings for nicotine, anger or irritability, anxiety, depression, impatience, trouble sleeping, restlessness, hunger, weight gain, and difficulty concentrating.
When trying to quit smoking with vaping a base containing nicotine, symptoms of withdrawal can include irritability, restlessness, poor concentration, anxiety, depression, and hunger. [152] The changes in the brain cause a nicotine user to feel abnormal when not using nicotine. [ 201 ]
Vaping causes bronchospasm. [102] Adolescents who vaped had a higher frequency of chronic bronchitis symptoms. [143] The long-term effects regarding respiratory flow resistance are unknown. [97] The available evidence indicates that e-cigarettes may result in respiratory effects that are like as well as unlike that of traditional cigarettes. [138]
The percentage who have ever tried vaping has also risen, from 14% in 2020 to 16% in 2022. In 2013, just 3% of children aged 11 to 15 had ever vaped, but this rose to 8% in 2020 and 10% in 2022.
A 2018 Cochrane review found that, in rare cases, nicotine replacement therapy can cause non-ischemic chest pain (i.e., chest pain that is unrelated to a heart attack) and heart palpitations, but does not increase the incidence of serious cardiac adverse events (i.e., myocardial infarction, stroke, and cardiac death) relative to controls. [47]
Mood swings in attention deficit hyperactivity disorder (ADHD) : Mood changes erratically and mood swings occur episodically, sometimes several times a day in rapid shifts. [ 60 ] [ 61 ] Characterized by a mild to moderate degree of irritability, [ 62 ] related to the environment, impulsiveness (impatience to get rewards). [ 63 ]